The join() method of Chars Class in the Guava library is used to combine or join all the given char values separated by a separator. These char values are passed a parameter to this method. This method also takes the separator as the parameter. This method returns a String which is the result of join operation on the specified char values.
For example: join(“-“, 1L, 2L, 3L) returns the string “1-2-3”.
Syntax:
public static String join(String separator, char… array)
Parameters: This method accepts two mandatory parameters:
- separator: which is the character that occurs in between the joined char values.
- array: which is an array of char values that are to be joined.
Return Value: This method returns a string containing all the given char values separated by separator.
Below programs illustrate the use of this method:
Example 1:
// Java code to show implementation of// Guava's Chars.join() method import com.google.common.primitives.Chars;import java.util.Arrays; class GFG { // Driver's code public static void main(String[] args) { // Creating a char array char[] arr = { 'a', 'b', 'c', 'd', 'e' }; // Using Chars.join() method to get a // string containing the elements of array // separated by a separator System.out.println(Chars.join("#", arr)); }} |
Output:
a#b#c#d#e
Example 2:
// Java code to show implementation of// Guava's Chars.join() method import com.google.common.primitives.Chars;import java.util.Arrays; class GFG { // Driver's code public static void main(String[] args) { // Creating a char array char[] arr = { 'G', 'E', 'E', 'K', 'S' }; // Using Chars.join() method to get a // string containing the elements of array // separated by a separator System.out.println(Chars.join("*", arr)); }} |
Output:
G*E*E*K*S